Compu-Fire CF-30650 Ignition Coil Black for Big Twin 83-99/Sportster 83-03Fits Big Twin 1983 1999 & Sportster 1983 2003. Features & Benefits: The Compu Fire Dual Fire Ignition coils use a modern molded case and are capable of 50,000 volts of output. The coil features easy OE style mounting, corrosion resistant brass primary and secondary terminals and 3 ohms of primary resistance. Use this coil with most aftermarket dual fire ignition modules and for stock replacement on most 1983 to 1999 Big Twin Models without fuel